Year	US Dollars adjusted for inflation)
1960	111000000
1961	205000000
1962	48000000
1963	19000000
1964	19000000
1965	7000000
1966	93000000
1967	143000000
1968	430000000
1969	230000000
1970	257000000
1971	376000000
1972	402000000
1973	243000000
1974	440000000
1975	260000000
1976	489000000
1977	194000000
1978	424000000
1979	441000000
1980	440000000
1981	851000000
1982	407000000
1983	1316000000
1984	727000000
1985	485000000
1986	219000000
1987	217000000
1988	71000000
1989	14000000
1990	159000000
1992	27000000
1994	209000000
1995	43000000
1996	28000000
1997	105000000
1998	171000000
1999	276000000
2000	207000000
2001	6000000
2002	15000000
2003	11000000
2004	161000000
2005	3000000
2006	9000000
2007	24000000
2008	21000000
2009	15000000
2010	11000000
2011	15000000
2012	5000000
2013	13000000
2014	6000000
2015	21000000
2016	17000000
2017	45000000
2018	17000000
2019	49000000
2020	7000000
2021	77000000
2022	39000000